LAUSR

To the Editor: Hyponatremia, defined as a serum sodium l-type Ig. Bonemarrow biopsywith the immunohistochemconcentration <135 mmol/L, is the most common waterelectrolyte imbalance in clinical practice. Hyponatremia ical study of the abnormal cells demonstrated a lack of expression of BandT-cell markers but strong expression of can be a complication of other diseases (eg, heart failure, renal failure, pneumonia). Hyponatremia can be divided into three main classes: hypovolemic; euvolemic, hypervolemic. The pathogenesis of hyponatremia including taking drugs such as water pills (diuretics) and some antidepressants and pain medications; heart failure and kidney or liver disease, bouts of chronic, severe diarrhea or vomiting.